1

Hot Swap Capability

ISL33001, ISL33002, ISL33003

The ISL33001, ISL33002, ISL33003 are 2-Channel Bus Buffers

that provide the buffering necessary to extend the bus

specification. In addition, the ISL33001, ISL33002, ISL33003

feature rise time accelerator circuitry to reduce power

consumption from passive bus pull-up resistors and improve

data-rate performance. All devices also include hot swap circuitry

are plugged into a live backplane, and the ISL33002 and

ISL33003 add level translation for mixed supply voltage

applications. The ISL33001, ISL33002, ISL33003 operate at

supply voltages from +2.3V to +5.5V at a temperature range of

-40°C to +85°C.

Related Literature

• AN1543, “ISL33001MSOPEVAL1Z, ISL33002MSOPEVAL1Z,

ISL33003MSOPEVAL1Z Evaluation Board User’s Manual”

Buffers”

Features

• +2.3VDC to +5.5VDC supply range

• >400kHz operation

• Bus capacitance buffering

• Rise time accelerators

• Hot swapping capability

• ±6kV Class 3 HBM ESD protection on all pins

• ±12kV HBM ESD protection on SDA/SCL pins

• Enable pin (ISL33001 and ISL33003)

• Logic level translation (ISL33002 and ISL33003)

• READY logic pin (ISL33001)

• Accelerator disable pin (ISL33002)

• Pb-free (RoHS Compliant) 8 Ld SOIC (ISL33001 only),

8 Ld TDFN (3mmx3mm) and 8 Ld MSOP packages

• Low quiescent current . . . . . . . . . . . . . . . . . . . . . . . 2.1mA typ

• Low shutdown current . . . . . . . . . . . . . . . . . . . . . . . . 0.5µA typ

Applications

• Server racks for telecom, datacom, and computer servers

• Desktop computers

• Hot-swap board insertion and bus isolation

Summary of Features

PART

NUMBER

LEVEL

TRANSLATION

ENABLE

PIN

READY

PIN

ACCELERATOR

DISABLE

ISL33001

No

Yes

Yes

No

ISL33002

Yes

No

No

Yes

ISL33003

Yes

Yes

No

No

FIGURE 1. TYPICAL OPERATING CIRCUIT

FIGURE 2. BUS ACCELERATOR PERFORMANCE

GND

SDA

SCL

+3.3V

µC

BACK

PLANE

ISL33003

EN

+5.0V

DEVICE

SDA

SCL

DEVICE

A

B

TIME (2µs/DIV)

AND 400pF BUS CAPACITANCE

WITHOUT BUFFER

WITH BUFFER

July 11, 2014

FN7560.6

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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